Wheel-rim-contracting device



Jan. 3, 1928.

P. J. RIVERS WHEEL RIM CONTRACTING DEVICE Filed Jan. 10, 1927 TOR retested 1.1.. 3, 192s...

-{UNITED W TES P rir'nilr J. nrvnas. or new nooHEtr-n, new Yon];

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- 1 Application filed January 10,1927. SeriaL-No. 160,116.

An object .ofthe present invention is. to provide a. small, portable and collapsible tool of. improved form for use in contracting the. demountable rim of an automobile Wheel in order to release permit it to be removedfrom the rim.

Another object ofthe invention is to provide a device of this character which is particularly designed to facilitatethe breaking of the'joint in the wheel rim preliminary to.' V p the inner or under face.of;tl1e.h0ok 8. This. edge13 and the said face of the hook. are 7 spacedapart to receive the outer edge of'thefl 1 the contraction thereof. :A further object of thefinvention is to pro- :vide a toolv of this character designed also to control the expansion of the wheel rim to its original form after it has beenicontracted by the tool.

. I'nathe drawings: g

Fig.1 is aside elevation of a demountable rim with a tire shoe upon it. showing the device. applied to the rim for breaking the joint thereof;

, Fig. 2 a fragmentary. side elevation upon alarger scale showing the device applied to the wheel rim and operated to contract it;

Fig. 3 a section taken on the line 3-3 of Fig. 2; Fig. 4 a side elevation of the rim contracted and locked in its contracted 'condition by the device;

Fig. .5 a view s milar to Fig. 2 showing the device operated for the expansion of,

the rim; and

Fig. 6 a perspective view of the device.

Referring by numerals to thevariousparts, 1 designates the wheel rim which may be'of any suitable form of thesplit demount able type. The ends of such a rim are usual- 'ly locked together by a device indicated at 2. These locking devices are made in severleased by'forcibly operating upon the rim at the joint. The rim usual outturned 'shoe-retaining flanges 3.

The contracting device consists of a lever inthe form of a long, straight, rigid bar 4. Pivotally connected to the bars a short distance from one end thereof, as at 5, is a shorter'pull-bar 6. The pivot 5 is located near one end of the bar 6. Each bar is thus formed with a short arm and a long arm at opposite sides of the pivot. The short arm f of the lever 4 and the long arm of the bar.

6 each carries at its outer end a similar device 7 for detachably connecting it to the flange 3 of the rim 1. Each of these connecting devices consists of a book 8 and a the tire shoe and all different forms and areadapted to be re .1 is formed with the.

pair of inner and outershort links!) and; i

= it 1,6543% ATENTTQFFICE- 5 respectivelyf The vlinksare 'pivotally con.--

nected at thelr inner ends as at 1:1 to the bar 45or to the ,bar Hand their-outer 'endsare pivot-ally connected as at 12 to thehookfSQ The book is of material widthand is formed to fit over the outturn'ed edge of the rim flange Bias shown in 3. The link 9 is 1 alsoof material width audits outer end is formedwith a straight edge 13opposed toj flange?) between them. v p vTheshort arm of the pull-bar 6 is inte andbreak the rim joint. To accomplish this,

the device is applied "as shown in Fig; 1.

.grally formed at its end with a rigid hook: I

the shoe "ate; thefrim git is necessary first to release the locking means 2 The i'igid hook 14. onthe short arm. of the v pull bar' 6 is nowin'engagement with the outer edge of the'rim flange 3. The shift-f ably mounted attaching or anchor device 7 carried by the shortarm of the lever 4&5 swung down out of the way andthe end off said arm is directly engaged with fthe inner side of the rim; 1. This arrangement gives,

the lever a great mechanical advantage and when a downward pressure, as viewed in Fig. 1, isapplied to the end of itslong arm the hook '14 willbe pulled straight down to exert a powerful substantially radial break ing force upon the rimat a point closely has been broken the v '95 v adjacent to the joint and'cause the locking 1 means 2 to be released.

around their pivot 5 to the positions shown in Fig. 2, and the connecting devices? are engaged with the flangeB at opposlte sides of the broken joint. The long arm of the lever is then swung 1n the directionindicated by the arrow. TlllS movement of the lever first causes the pull bar 6 and the short] 7 arm of the lever to rock the links 9sand 1O relatively to the hooks 8 about their pivots 12and exert a pull upon said links at an angle to the radial lines of the rimextending through the hooks. This stress forces i the edge 13 of each link 9 into tight engagement with the rim flange 3 at& point located at one side of the pivot 12. The end of said edge bites into the under side of. the flange and the hook 8 is drawn down into binding engagement with the upper side of the flange. The hooks 8 are thus firmly held against slipping either" cireumterentially or lateral y of the rim and a continued movement of the lever causesthe rim to be contracted. The power applied tothe bar '6 will pull the end of the rim to which it is connected inwardly and carry it inside of the other end of the rim as shown in Fig; 2, thereby contracting the rim and freeing the shoe from it.

tracted the locking hook 15 is engaged with the rim flange to lock the rim in its contracted condition. The tendency of the rim toexpand will put a strain upon the bar 6 and, through said bar, upon the lever 4.

This strain will cause the hook 15 to bind against the rim flange and thereby lock the device in position to hold the rim contracted.

hen a tire shoe has been replaced upon the contracted rim the hook 15 is released from the rim flange and the lever i is grasped to control the expansion of the riin. If the surrounding shoe resists the complete expansion of the rim the lever is forced in hen the rim has been con may be readily folded orcoll'apsed and is,

therefore, adapted to be carried in an ordie nary tool box. vice may beused in a shop or carried as a part of the tool equipment of an automobile.

to pennit the end of the lever to directly en-- gage the inner side of the rim at one side ojf tl-r, rim oint; and means carried by one. end

of the said rigid bar to engage the rim flange on the outer side the at the others-ide of the joint and at at stancelfroni the bar pivot n'mterially less than the length of the. short arm oifthe lever. 1

As an article of manufacturea tool for disconnecting a rim from a tire, comprising a rigid lievergn 'r gid bar; means pivotally connecting together said bar and lever in-- terinediate their ends to provide each with a rigid long arm and a rigid short arm; the rigid short arm of the lever being adapted to engage the inner side of the rim; pivotal, means mounted directly on the end of the.

short arm of the lever and adapted to engage the outer edge oi the run flange; and means carried by each end of the saidrigid bar to engage theouter edge of the-rin'r flange. g in testnnony whereof hereunto afiix i'ny signature.

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It is clear that such a de-- 

